Epithelial response in penetrating keratoplasty

Area of Science:

• Ophthalmology
• Corneal Surgery
• Epithelial Biology

Background:

• Penetrating keratoplasty involves replacing the diseased cornea with donor tissue.
• The long-term fate and behavior of donor corneal epithelium are not fully understood.

Purpose of the Study:

• To investigate the development and characteristics of corneal epithelial dots after penetrating keratoplasty.
• To assess the persistence of donor corneal epithelium and its potential relationship with graft characteristics.

Main Methods:

• Observation of 30 patients undergoing penetrating keratoplasty.
• Monitoring for the development of discrete corneal epithelial dots in the peripheral donor cornea.
• Comparison of dot incidence between disparate and isometric graft groups.
• Analysis of dot density changes following nylon suture removal.

Main Results:

• Discrete corneal epithelial dots developed in the peripheral donor cornea within two months post-keratoplasty in 30 followed patients.
• The incidence of these dots was 55% in the disparate group and 30% in the isometric group (not statistically significant).
• Changes in dot density after suture removal suggested lateral cell movement in the corneal epithelium.

Conclusions:

• Donor corneal epithelium persists for extended periods after penetrating keratoplasty.
• The development of epithelial dots may be influenced by graft characteristics (disparate vs. isometric).
• Lateral cell movement plays a role in corneal epithelial dynamics post-surgery.